Comment 16 for bug 410933

I haven't asked for this change to be cherry-picked into Karmic. It will be
in Lucid, however.

You have several options for Karmic:
1) compile alsa-driver git HEAD yourself;
2) use the alsactl init entry for intel8x0 that I posted to the alsa-devel
mailing list as a patch;
3) create a modprobe entry for intel8x0 ac97_quirks=inv-eapd

On Oct 7, 2009 1:15 AM, "Mahesh Asolkar" <email address hidden> wrote:

I am seeing the same on my laptop as well. Here are the details:

:) ~ > lshal | grep system.hardware.product
 system.hardware.product = 'VGN-T140P(UC)' (string)
:) ~ > lspci -nv | grep -A1 0401
00:1f.5 0401: 8086:24c5 (rev 03)
       Subsystem: 104d:81c0

Will the fix make it into the upcoming release (karmic)? Or should I
wait for the next iteration? In the meanwhile, is there somewhere in the
startup scripts I can add the alsa+modprobe commands to automatically
enable audio when the laptop starts?

--
No sound in fresh Jaunty/Karmic install until disabling "external amplifier"
https://bugs.launchpad.net/bugs/410933
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Status in “alsa-utils” package in Ubuntu: Won't Fix
Status in “linux” package in Ubuntu: Fix Committed

Bug description:
Binary package hint: alsa-base

Sound does not work at all until I load gnome alsa mixer and un-check
"External Amplifier".

$ lspci | grep -i aud
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)

alsa-info.sh output:
http://www.alsa-project.org/db/?f=0c9fce319c2f2fc4951f3c8575d22e332a4b9569

(My config is currently not the default as I've tried a few other things
along the way, but it seems like the default "External Amplifier" setting
was the only problem.)

This computer is a Sony VAIO VGN-T350P.

$ lsb_release -rd
Description: Ubuntu 9.04
Release: 9.04

$ apt-cache policy alsa-base
alsa-base:
 Installed: 1.0.18.dfsg-1ubuntu8
 Candidate: 1.0.18.dfsg-1ubuntu8
 Version table:
 *** 1.0.18.dfsg-1ubuntu8 0
       500 http://us.archive.ubuntu.com jaunty/main Packages
       100 /var/lib/dpkg/status